Travel mug: Can it charge while actively heating my drink?

If you are keeping your beverage hot while using the coaster, it can maintain your perfect temperature all day!* When Ember is on the charging coaster the battery will stay at a constant level and will not charge any higher until your Ember is empty or is powered off.

* The Ember has a 2 hour inactivity auto shutoff feature. Picking the Ember to move the accelerometer will reset the 2 hour timer.